New member to join with e34 535.

[midnightsv]

Hello to all.
I am new tro this forum and to E34 (not a stranger to German engineering)
Recently I got 89 535 5 speed. (deal I couldn't pass up).
Overal vehicle is in goog shape (one owner)
I need a little help finding right approach to this beast.
First issue is rough idle (getting tune up parts).
Second issue, on a hot re-start vehicle starts fine but wants to stall (even in neutral) or if accelerating heasitates badly. Few trottle blips usually clear this issue, afterwards it runs OK.
So far I've checked AFM TP switch, ICV (buzzing but doesn't open to 50% - causing base idle at cold start up (should be abouve 1000RPM ))
Also, P1222 is present.
I will check dreaded check valve at fuel sender.
From looks O2 is switching once warmed up, no rotten egg smell or bad consumption. I think its getting 23-25 MPG combined.

I got BMW FSM and Bentley manual.
There must be someone with similar (resolved) issue, right?

THANKS